Jack plug



sept; 1-3, 19217. 1,642,064 A H. o. ENGsTRoM JACK' PLUG 'Filed March 6. 1925 A TTORNEY C10.,v OF NEW PATENr `opilicis.A g

HENRY Q .ENGsrRoM, or isninenronr, CONNECTICUT, AssIeNorvu 1ro DE .iuitrnonuors' JACK PLUG.

.Appiicaticn inea March 6,1925. serial Nojiassi.

This invention rrelates to ajack plug of the telephone type,-useful for afvariety of purposes, but especially adapted yfor use in conne'ction with telephonek jacks-or plug receptacles ratus. ..Ob3ects of the. invention are to provide a i jack plugof the presentcharacter which will `be aniinprovement generally over all somewhat similar plugs heretofore known; which Will'fbe1simple'fand Apractical inV construction,

the :plug consisting of afminiinum4 number ofparts.; whichy canbe very economically: manufactured; land which will be durable andfdependablein use.

A further vobject isito provide a jack plug ofjthe telephone: :type-the handle ofV which consistsof asingle piece of'ordinarily molded insulating..material'havingV a conducting-nut incorporated therein.

j A lfurther object is to provide a jack plug havingn a ione-piece vinsulating handle as stated, and; also having Vconnectors and contactportions of simple and improved 'conf struction adapted to be associated :with said one-piece insulating handle.

A still further ob]ectv is ytofconstructythe; ones-piecey insulating handle so that each 0fr the elements of saidl conductors and connectors canl be separatelyA assembled there-l with. and disassembled therefrom, and to construct saidinsulating handle so that it' canl cooperate with the remainder of the plug -f structure in locating all'of the conductors and connectors thereof, whereby the completedplug can be composed o-f-but a rhin-V imumnumber of conductors,.connectors and insulating members all associated in simple r andvunique ina-nner. c .Y

- With the .above obJects-fin'viemas wellas.V

others whichrwill appeara's the specication proceeds,- the inventioncomprises; the construction, arrangement yand combination of partsas now to bev fully described and as liereinaftento lbe specifically claimed', it being understood thatvthe .disclosure herein 'Y is'inerely illustrative and meant i'ii'nowayA in a limiting sense, changes in Vdetails Vof constructionand arrangementiof parts being permissible so long as within the spirit of the invention and the scope of the appendedV claims. f

VIn the accompanyingdrawing forming a- 4vpartof this specificatiomf ordinarily eii'iployed in radio appa- Fig. l isa. top or bottom plan view of an assembled plug in which the features ofthe f invention are incorporated, andhaving con-s ductors inserted therein and ready for use; y

-Fig 2 is acentral, longitudinal, horizontal sectional View of the plug of Fig.V 1, dis-y closing one. of the conductors removed; f

.1Fig. 3 is a, sectional view as'on line 3- 3 in Fig; 2; .f y AFigl is an end view of thehandle ofthe Aplug as seen from the right in Figs. 1' and 2 5 is alview correspondingvwiththe' showing of Fig. 4,' but disclosing the spring connectors associatedwith the handle;

Fig. 6is a fragmentary sectional view as on line 6-6 in Fig. 2; and

"Fig v7 isa detail ofall ofthe parts ofthe` plug disassembled, suggesting the manner of4 assembly.

With respect tothe drawing, 10Y denotes the handle of the improved plug whichcon-y sists of a single piece of suitable insulatin This handle is ordinarily molde and vincludes passages and recesses .ofv peculiar construction in-its interior.v l

" N umerals 11 and 12 denote spaced apart,

s'pectively,l ofjsaid passages beingenlarged to betterv receive cord tips.- Y

.'Theiopposite end 15 of the handle has aV centra? recess 16 at the base of which isa' conducting nut '17. The nut 17 is desirably.

molded vin the material ofv thehandle 'be-' vtween thepassages 111 and 12 andr has lathreaded interior 18V with which the recess 16y is adapted to' communicate.. f `.The recess. 16 is4 preferably of diameter slightly greater thanthe diameter' of thenut 17 vand vdiametrically op` posit-e .portions of the'recess, in the directionv of the width of thehandle, have substantial.Y communication with the adjacent endpor-;

tubular and longitudinal passages extending through theV handle 10;.theend portions'13 and 14, re`

tions of the. passages 11 and 12, as indicated i iat 19 and 20, respectively.`

lNumeraly 21 represents a spring connector of L-sliapehavingv a long arm 22 adaptedYA toy enter thepassage 11 and a lsho'rt-.arni23 the adjacent face of the conducting nutn 17.

The armj23 is shaped tofitthe recess 16 andV adjacentrecess 1 9 sothat apart of said arm1 Y 23can lie .against saidnutl? and a part` adapted toenter the recess 16`to lie againstv thereof canlie inv the4 communicating wayP 'r Contact, a tip contact, a rod connected to the be detachably clamped between the insutip contact and extending through the sleeve, lating handle and the sleeve contact and to 10 means for insulating said sleeve contact engage the conductors When inserted in the from the tip contact and rod, a handle of passage. I v5 insulating material having a pair of pas- Signed at Bridgeport, in the County of sages for the reception of electrical eonduc- Fairfield, and State of Connecticut, this 5th tors, and insulated connectors associated With day of March A. D., 1925. the tip and sleeve contacts and adapted to HENRY O. ENGSTROM. 

